my 16 year old son has ADHD and tracies of ASPERGUS SYNDROME

Hi my name is marie this is all new to me although my son was statemented in primary school? my problem is i dont have any help with my son since he was kicked out of seconary school last year but was offered a place at a local college which sadley didnt work out and only lasted not even a couple of weeks! in my own experiences over the years i have not had the right help and support my son needs and i really dont know where to turn to next:( my son is currently at home but he should be studying for hes future.my son also has found it hard to come to terms with all of this and i am really worried he is loosing faith in me as hes mother because i dont know wot to do can anybody please give me any useful advice x